Some Fun Easy Updo Hairstyles for School? :)?

what are some fun easy updo hairstyles for school that will hide my frizzies and waves? i hate my hair i just want to hide it. my hairs long, by the way.
and also some cute hairstyles for when i straighten my hair? thanks

Suggestion:

i have very long hair and these are some things i do with mine so they do work. you can do a bunch of things, a sloppy bun with your bangs left out, you can do a simple pony tail,you can do a sloppy loose pony tail and drape it over your shoulders, you can do a lot with your hair, these arent all. just take a day or night or w.e n sit in front of the mirror and experiment with what you think will look coold